UK EV drivers using medical cannabis should know that the ‘in charge’ rules...

https://dlf-ne.org/whats-the-simplest-driving-pack-for-medical-cannabis-patients/

UK EV drivers using medical cannabis should know that the ‘in charge’ rules apply even while parked and charging. The 2 micrograms per litre THC limit means a positive roadside swab could lead to a mandatory blood test at a station